Air-cleaner.



ALC. BENNETT.

AIR CLEANER.

APPLICA]'ION mm FEB. 28. 1'91 1.

Patented Aug. 20

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ASHLEY C. BENNETT, OF MINNEAPOLIS, MINNESOTA.

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Specification of Letters Patent.

Application filed February at, 1917. Serial No. 151,553.

To all whom it may concern Be it known that l, AsHLEY C. BENNETT, acitizen of the United States, residing at Minneapolis, in the county ofHennepin and State of Minnesota, have invented certain new and usefulImprovements in Air- Cleaners, of which the following is aspecification.

My invention relates to air cleaners for carbureters, and has for itsobject to provide such an air cleaner adapted to be connected with theintake passageway of a carburetor wherein means are provided for causingcertain movements of the air and material carried by air within thecleaner for causing the same to gravitate within the cleaner into aclosed casing at the bottom' of the cleaner which is adapted to beremoved bodily therefrom with any accumuwith this conical member andforming a support therefor are a series of radially extended plateswhich prevent circulation of air carried below the lower edge of theconical member. A further object of my invention is to provide aseparable device for receiving the dirt which is removably attached tothe lower portion of the air cleaner, preferably being threaded upon adownwardly converging conical extension of the cylinder beforementioned,the dirt receiver extending entirely below the point of unionso that if removed when the engine is running the break will occur abovethe accumulations of dirt, which will be out of reach of the suctioncaused at the joint when the same is broken.

The full objects and advantages of my invention will appear inconnection with the detailed description thereof, and are particularlypointed out in the claims.

In the drawings illustrating the application of my invention in oneform,

Figure 1 is a side view of a carburetor shown in connection with myinvention,

partly in section. Fig. 2 is a sectional plan of the same on line 2-2 ofFig. 1. F ig. 3 is a similar sectional plan on line 33 of Fig.

1. Figs. 4 and-5 are details showing the manner of forming the spiralpassageways.

The carbureter 10, of usual construction, has an outlet pipe 11 and aninlet pipe 12. To this is attached by a union 13 a cylindrical casing 14connected to the union by a conical extensioif 15. The casing 14 standsvertically and preferably has connected to the lower portion aconverging memberlti which is threaded, as indicated at 17, atits lowerend and upon which is screwed an extended cap 18. The cap 18 depends arequired distance below the entire receptacle Patented Au 20, 1918.

formed by casings 14, 15, 16, and comprises I a dust receiving chamber19 in which dust, indicated at 20, will remain when cap 18 is removed,even though the engine is running so that air would flow into the casingat 17 after the cap is taken off.

A pair of spiral members 23, shown in detail in Figs. 4 and 5, each openalong a side as indicated'at 24-and closed at an end 25, have their opensides secured by soldering or otherwise to the interior of cylin dricalcasing 14, with the closed ends 25 just beyond openings 26 through thecasing 14',"

thus forming spiral passageways extending in opposite directions withinthe casing and closed except for openings 26 to the outside air and atthe ends of such passageways, as indicated at 27, which are near thebottom of casing 14.

Within the converging or conical members 16 are vertical radiallydisposed plates 28 29 which divide thespa ce into four passagewaysopening at 27 to cap receptacle 18. Extending from members '2829 intothe space 19 of cap receptacle 18 are lips or projections 32 preferablyintegrally extended from plates 2829. Upon the plates 28- 29, rests aconical member 30 whose lower edge is spaced from the lower edge of case14'so as to leave an annular passageway 31.

In operation, the pulsating suction of the engine draws air throughopenings 26 discharging the same at 27 in a direction to cause the airto whirl in, and against the outside wall of, the cylinder immediatelyabove the annular passageway 31. This, assisted by gravity, causesallsolid particles to pass through annular passageway 31.

The rotating air in passing to carbureter inlet 12 tends to flow alongconical member and through the center of chamber 14.

Any particles of solid matter which gravi-' tate upon member 30 are thusagitated in a circular direction on said member and ultimately will fallfrom the lower edge of the same.

Theplates 28 and 29 prevent rotation of air below the lower edge ofmember30 and provide dead air settling space through which particles "ofdirt and solid matter gravitate into cap casing 18. Accumulations in thecap may be removed at any time without stopping the engine byrsimplyunscrewing the cap for emptying.

I claim:

1. An air cleaner comprising a cylindrical casing having means forsecuring the same in vertical position in communication with an aircurrent inducing means, a pair of openings extending through said casingat opposlte sides thereof, a pair of troughlike members within thecasing having their upper closed end extending over said openings andtheir lower open ends at a lower point within the casing, said membersforming oppositely extended spiral passageways discharging tangentiallyat diametrically opposite points within the casing to cause the inducedcurrents of air to rotate in proximity-to the wall of the casing in theplane of the discharge points of said passageways.

"2. An air cleaner comprising a cylindrical casing, having means forsecuring the same in vertical position in communication with anair-current inducing means, said casing having an opening near the topthereof and being otherwise sealed from the outside air, and atrough-like member having side and bottom wallsand one end Wall securedto and supported by the inner wall of the-casin vertical position incommunication with an air-current inducing means,'means inside saidcasing for directing said air current in the form of a cyclone or whirlWithin and at the lower part of the casing, and a conical bafiie-platelocated Within the casing with its lower edge spaced from the lower portion of the casing and with its apex extended through the center of saidcyclone in the plane where the cyclone is produced within the casing.

' 4. An air cleaner comprising a casing having a vertical cylindricalportion, means for connecting the upper part of-said casing withair-current inducing mechanism,means for admitting air into the casingand directing it in a cyclone at the bottom of the cylindrical portionthereof; a conical bafile having its lower edge spaced from-the walls ofthe casing to form an annular passageway through which dirt and solid.impurities are projected and gravitate, said casing being extended belowthe conical member,

and a plurality of vertical partlti'on plates extending from the loweredge of saidbafile and dividing said extended portion into a.multiplicity of passageways.

In testimony whereof I aflix signature.

ASHLEY C. BENNETT.

